One of the huge advantages of using the Arduino is the existing libraries. I just bought a 128x128 SPI Color TFT LCD module and there is library for it. Couple of clicks and I'm good to go. I checked out tinygo.org and I am impressed, a lot of drivers and processors.

I do like golang, I written a number of programs in golang.

But I am heavily invested in the arduino programming in the C environment, what would be an advantage to switching?